ACCOUNTS RECEIVABLE (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
ACCOUNTS RECEIVABLE
Accounts receivable, gross	$ 27,202	$ 38,046
Less: allowance for doubtful accounts	(2,474)	(2,116)
Accounts receivable, net	24,728	35,930
Freight rebates receivable
ACCOUNTS RECEIVABLE
Accounts receivable, gross	0	11,729
Accounts receivable, trade
ACCOUNTS RECEIVABLE
Accounts receivable, gross	10,553	10,380
Credit card receivables
ACCOUNTS RECEIVABLE
Accounts receivable, gross	10,515	12,141
Other receivables
ACCOUNTS RECEIVABLE
Accounts receivable, gross	$ 6,134	$ 3,796